991 citations · 18.7k across the 255 of their papers we have counts for
5 papers · 1 filter
The absence of diffuse gas around the dwarf spheroidal galaxy Leo I
David V. Bowen, Eline Tolstoy, Andrea Ferrara +2
We have obtained spectra of three QSO/AGNs with the GHRS aboard the Hubble Space Telescope to search for absorption from low column density gas in the halo of the dwarf spheroidal…
Properties of the Lyman Alpha Clouds from non-equilibrium Photoionization Models
A. Ferrara, E. Giallongo
We investigate the thermal and ionization history of Lyman alpha clouds photoionized by a time--dependent UV background, including non equilibrium effects. The results show that it…
The Effect of Light Scattering by Dust in Galactic Halos on Emission Line Ratios
Andrea Ferrara, Simone Bianchi, Ralf-Juergen Dettmar +1
We present results from Monte Carlo simulations describing the radiation transfer of line emission, produced both by HII regions in the disk and in the diffuse ionized gas (DI…
Cosmological Conductive/Cooling Fronts as Lyman Alpha Forest Clouds
Andrea Ferrara, Yuri Shchekinov
We propose a simple model for the origin and evolution of \lya clouds based on cosmological conductive/cooling fronts. In this model the \lya arises in the interfaces between the I…
The Turbulent Interstellar Medium: Generalizing to a Scale-dependent Phase Continuum
Colin A. Norman, Andrea Ferrara
We discuss the likely sources of turbulence in the ISM and explicitly calculate the detailed grand source function for the conventional sources of turbulence from supernovae, super…